Elevator system with a bus bar and a current collector

Abstract

An elevator system having a car which can be moved along an elevator shaft in a direction of travel. The elevator shaft includes a busbar that extends in the direction of the direction of travel. The car comprises a current collector that can be moved between a first position and a second position along a compression direction. In the first position, the current collector is in engagement with the busbar such that there is an electrical connection between the busbar and the current collector. In the second position, the current collector is disengaged from the busbar, such that the electrical connection between the busbar and the current collector is separated.

1 .- 17 . (canceled) 
     
     
         18 . An elevator system, comprising:
 an elevator shaft extending along a direction of travel;   a busbar disposed in the elevator shaft and extending in the direction of travel; and   a car configured to move along the elevator shaft in the direction of travel and comprising a current collector;   wherein the current collector is configured to move between a first position and a second position along a compression direction,   wherein the current collector, in the first position, is in engagement with the busbar, such that there is an electrical connection between the busbar and the current collector, and in the second position, is disengaged from the busbar, such that the electrical connection between the busbar and the current collector is separated.   
     
     
         19 . The elevator system of  claim 18 , comprising:
 a drive unit configured to propel the car, wherein the drive unit is operable, regardless of whether the electrical connection is present between the busbar and the current collector.   
     
     
         20 . The elevator system of  claim 18 , wherein the car comprises an energy store configured to supply power to electrical components of the car during the assumption of the second position. 
     
     
         21 . The elevator system of  claim 20 , wherein the energy store is a lithium-ion accumulator. 
     
     
         22 . The elevator system of  claim 20 , wherein the car comprises a first pressure accumulator configured to compress the current collector into the first position, and a retention device, which is configured to retain the current collector in the second position and is configured, upon the release of the retention device, to permit the compression of the current collector by the first pressure accumulator into the first position. 
     
     
         23 . The elevator system as claimed in  claim 22 , wherein the car comprises a reset device configured to move the current collector from the first position to the second position. 
     
     
         24 . The elevator system of  claim 18 , wherein the busbar comprises a plurality of recesses, which extend in the direction of travel, wherein each of the recesses comprises, in its interior, a contact region, to which the voltage which is to be transmitted is applied. 
     
     
         25 . The elevator system of  claim 24 , wherein the current collector comprises a plurality of collector contacts wherein, in the first position, one collector contact respectively engages in one of the recesses, such that the collector contacts make contact with the contact regions in the interior of the recesses. 
     
     
         26 . The elevator system of  claim 25 , wherein the busbar comprises lead-in chamfers, which extend along the recesses. 
     
     
         27 . The elevator system of  claim 18 , wherein the current collector comprises a socket and a plurality of collector contacts, wherein each of the collector contacts is moveable relative to the socket along the compression direction, and wherein the current collector comprises a plurality of second pressure accumulators, each of which is assigned to a collector contact, and which compress the associated collector contact relative to the socket along the compression direction towards the busbar. 
     
     
         28 . The elevator system of  claim 18 , wherein the current collector comprises a socket and a plurality of collector contacts, wherein each of the collector contacts is pivotable relative to the socket about a swivel axis. 
     
     
         29 . The elevator system of  claim 28 , wherein the plurality of collector contacts are mutually bonded by means of coupling elements, such that the plurality of collector contacts are only pivotable in combination. 
     
     
         30 . The elevator system of  claim 29 , wherein the current collector comprises a third pressure accumulator configured to compress the plurality of collector contacts back to a resting position, following pivoting thereof. 
     
     
         31 . The elevator system of  claim 18 , wherein at least one stationary component is arranged in the elevator shaft, which component is supplied with power via the busbar. 
     
     
         32 . A method for operating an elevator system, including an elevator shaft extending along a direction of travel; a busbar disposed in the elevator shaft and extending in the direction of travel; and a car configured to move along the elevator shaft in the direction of travel and comprising a current collector; wherein the current collector is configured to move between a first position and a second position along a compression direction, wherein the current collector, in the first position, is in engagement with the busbar, such that there is an electrical connection between the busbar and the current collector, and in the second position, is disengaged from the busbar, such that the electrical connection between the busbar and the current collector is separated, comprising the steps of:
 moving the current collector from the first position to the second position when a speed of the car exceeds a limiting speed.   
     
     
         33 . The method for operating an elevator system of  claim 32 , comprising moving the current collector from the second position to the first position when a speed of the car undershoots the limiting speed. 
     
     
         34 . The method for operating an elevator system of  claim 32 , comprising conveying the current collector to the first position in the event of an emergency stop. 
     
     
         35 . The elevator system of  claim 18 , comprising a control system configured to move the current collector from the first position to the second position when a speed of the car exceeds a limiting speed. 
     
     
         36 . The elevator system of  claim 18 , comprising a control system configured to move the current collector from the second position to the first position when a speed of the car undershoots the limiting speed. 
     
     
         37 . The elevator system of  claim 18 , comprising a control system configured to convey the current collector to the first position in the event of an emergency stop.